1 files changed, 153 insertions, 97 deletions

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
index 0c58f91b3ff3..0778e587a2d6 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
@@ -1,5 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0 OR MIT
 /*
- * Copyright 2016-2018 Advanced Micro Devices, Inc.
+ * Copyright 2016-2022 Advanced Micro Devices, Inc.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -43,28 +44,37 @@ static inline struct v9_sdma_mqd *get_sdma_mqd(void *mqd)
 }
 
 static void update_cu_mask(struct mqd_manager *mm, void *mqd,
-			struct queue_properties *q)
+			struct mqd_update_info *minfo)
 {
 	struct v9_mqd *m;
-	uint32_t se_mask[4] = {0}; /* 4 is the max # of SEs */
+	uint32_t se_mask[KFD_MAX_NUM_SE] = {0};
 
-	if (q->cu_mask_count == 0)
+	if (!minfo || (minfo->update_flag != UPDATE_FLAG_CU_MASK) ||
+	    !minfo->cu_mask.ptr)
 		return;
 
 	mqd_symmetrically_map_cu_mask(mm,
-		q->cu_mask, q->cu_mask_count, se_mask);
+		minfo->cu_mask.ptr, minfo->cu_mask.count, se_mask);
 
 	m = get_mqd(mqd);
 	m->compute_static_thread_mgmt_se0 = se_mask[0];
 	m->compute_static_thread_mgmt_se1 = se_mask[1];
 	m->compute_static_thread_mgmt_se2 = se_mask[2];
 	m->compute_static_thread_mgmt_se3 = se_mask[3];
+	m->compute_static_thread_mgmt_se4 = se_mask[4];
+	m->compute_static_thread_mgmt_se5 = se_mask[5];
+	m->compute_static_thread_mgmt_se6 = se_mask[6];
+	m->compute_static_thread_mgmt_se7 = se_mask[7];
 
-	pr_debug("update cu mask to %#x %#x %#x %#x\n",
+	pr_debug("update cu mask to %#x %#x %#x %#x %#x %#x %#x %#x\n",
 		m->compute_static_thread_mgmt_se0,
 		m->compute_static_thread_mgmt_se1,
 		m->compute_static_thread_mgmt_se2,
-		m->compute_static_thread_mgmt_se3);
+		m->compute_static_thread_mgmt_se3,
+		m->compute_static_thread_mgmt_se4,
+		m->compute_static_thread_mgmt_se5,
+		m->compute_static_thread_mgmt_se6,
+		m->compute_static_thread_mgmt_se7);
 }
 
 static void set_priority(struct v9_mqd *m, struct queue_properties *q)
@@ -79,15 +89,27 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_dev *kfd,
 	int retval;
 	struct kfd_mem_obj *mqd_mem_obj = NULL;
 
-	/* From V9,  for CWSR, the control stack is located on the next page
-	 * boundary after the mqd, we will use the gtt allocation function
-	 * instead of sub-allocation function.
+	/* For V9 only, due to a HW bug, the control stack of a user mode
+	 * compute queue needs to be allocated just behind the page boundary
+	 * of its regular MQD buffer. So we allocate an enlarged MQD buffer:
+	 * the first page of the buffer serves as the regular MQD buffer
+	 * purpose and the remaining is for control stack. Although the two
+	 * parts are in the same buffer object, they need different memory
+	 * types: MQD part needs UC (uncached) as usual, while control stack
+	 * needs NC (non coherent), which is different from the UC type which
+	 * is used when control stack is allocated in user space.
+	 *
+	 * Because of all those, we use the gtt allocation function instead
+	 * of sub-allocation function for this enlarged MQD buffer. Moreover,
+	 * in order to achieve two memory types in a single buffer object, we
+	 * pass a special bo flag AMDGPU_GEM_CREATE_CP_MQD_GFX9 to instruct
+	 * amdgpu memory functions to do so.
 	 */
 	if (kfd->cwsr_enabled && (q->type == KFD_QUEUE_TYPE_COMPUTE)) {
-		mqd_mem_obj = kzalloc(sizeof(struct kfd_mem_obj), GFP_NOIO);
+		mqd_mem_obj = kzalloc(sizeof(struct kfd_mem_obj), GFP_KERNEL);
 		if (!mqd_mem_obj)
 			return NULL;
-		retval = amdgpu_amdkfd_alloc_gtt_mem(kfd->kgd,
+		retval = amdgpu_amdkfd_alloc_gtt_mem(kfd->adev,
 			ALIGN(q->ctl_stack_size, PAGE_SIZE) +
 				ALIGN(sizeof(struct v9_mqd), PAGE_SIZE),
 			&(mqd_mem_obj->gtt_mem),
@@ -125,6 +147,10 @@ static void init_mqd(struct mqd_manager *mm, void **mqd,
 	m->compute_static_thread_mgmt_se1 = 0xFFFFFFFF;
 	m->compute_static_thread_mgmt_se2 = 0xFFFFFFFF;
 	m->compute_static_thread_mgmt_se3 = 0xFFFFFFFF;
+	m->compute_static_thread_mgmt_se4 = 0xFFFFFFFF;
+	m->compute_static_thread_mgmt_se5 = 0xFFFFFFFF;
+	m->compute_static_thread_mgmt_se6 = 0xFFFFFFFF;
+	m->compute_static_thread_mgmt_se7 = 0xFFFFFFFF;
 
 	m->cp_hqd_persistent_state = CP_HQD_PERSISTENT_STATE__PRELOAD_REQ_MASK |
 			0x53 << CP_HQD_PERSISTENT_STATE__PRELOAD_SIZE__SHIFT;
@@ -136,7 +162,7 @@ static void init_mqd(struct mqd_manager *mm, void **mqd,
 
 	m->cp_hqd_quantum = 1 << CP_HQD_QUANTUM__QUANTUM_EN__SHIFT |
 			1 << CP_HQD_QUANTUM__QUANTUM_SCALE__SHIFT |
-			10 << CP_HQD_QUANTUM__QUANTUM_DURATION__SHIFT;
+			1 << CP_HQD_QUANTUM__QUANTUM_DURATION__SHIFT;
 
 	if (q->format == KFD_QUEUE_FORMAT_AQL) {
 		m->cp_hqd_aql_control =
@@ -164,7 +190,7 @@ static void init_mqd(struct mqd_manager *mm, void **mqd,
 	*mqd = m;
 	if (gart_addr)
 		*gart_addr = addr;
-	mm->update_mqd(mm, m, q);
+	mm->update_mqd(mm, m, q, NULL);
 }
 
 static int load_mqd(struct mqd_manager *mm, void *mqd,
@@ -174,13 +200,14 @@ static int load_mqd(struct mqd_manager *mm, void *mqd,
 	/* AQL write pointer counts in 64B packets, PM4/CP counts in dwords. */
 	uint32_t wptr_shift = (p->format == KFD_QUEUE_FORMAT_AQL ? 4 : 0);
 
-	return mm->dev->kfd2kgd->hqd_load(mm->dev->kgd, mqd, pipe_id, queue_id,
+	return mm->dev->kfd2kgd->hqd_load(mm->dev->adev, mqd, pipe_id, queue_id,
 					  (uint32_t __user *)p->write_ptr,
 					  wptr_shift, 0, mms);
 }
 
 static void update_mqd(struct mqd_manager *mm, void *mqd,
-		      struct queue_properties *q)
+			struct queue_properties *q,
+			struct mqd_update_info *minfo)
 {
 	struct v9_mqd *m;
 
@@ -237,43 +264,18 @@ static void update_mqd(struct mqd_manager *mm, void *mqd,
 	if (mm->dev->cwsr_enabled && q->ctx_save_restore_area_address)
 		m->cp_hqd_ctx_save_control = 0;
 
-	update_cu_mask(mm, mqd, q);
+	update_cu_mask(mm, mqd, minfo);
 	set_priority(m, q);
 
 	q->is_active = QUEUE_IS_ACTIVE(*q);
 }
 
 
-static int destroy_mqd(struct mqd_manager *mm, void *mqd,
-			enum kfd_preempt_type type,
-			unsigned int timeout, uint32_t pipe_id,
-			uint32_t queue_id)
+static uint32_t read_doorbell_id(void *mqd)
 {
-	return mm->dev->kfd2kgd->hqd_destroy
-		(mm->dev->kgd, mqd, type, timeout,
-		pipe_id, queue_id);
-}
-
-static void free_mqd(struct mqd_manager *mm, void *mqd,
-			struct kfd_mem_obj *mqd_mem_obj)
-{
-	struct kfd_dev *kfd = mm->dev;
-
-	if (mqd_mem_obj->gtt_mem) {
-		amdgpu_amdkfd_free_gtt_mem(kfd->kgd, mqd_mem_obj->gtt_mem);
-		kfree(mqd_mem_obj);
-	} else {
-		kfd_gtt_sa_free(mm->dev, mqd_mem_obj);
-	}
-}
+	struct v9_mqd *m = (struct v9_mqd *)mqd;
 
-static bool is_occupied(struct mqd_manager *mm, void *mqd,
-			uint64_t queue_address,	uint32_t pipe_id,
-			uint32_t queue_id)
-{
-	return mm->dev->kfd2kgd->hqd_is_occupied(
-		mm->dev->kgd, queue_address,
-		pipe_id, queue_id);
+	return m->queue_doorbell_id0;
 }
 
 static int get_wave_state(struct mqd_manager *mm, void *mqd,
@@ -290,7 +292,8 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
 
 	*ctl_stack_used_size = m->cp_hqd_cntl_stack_size -
 		m->cp_hqd_cntl_stack_offset;
-	*save_area_used_size = m->cp_hqd_wg_state_offset;
+	*save_area_used_size = m->cp_hqd_wg_state_offset -
+		m->cp_hqd_cntl_stack_size;
 
 	if (copy_to_user(ctl_stack, mqd_ctl_stack, m->cp_hqd_cntl_stack_size))
 		return -EFAULT;
@@ -298,30 +301,69 @@ static int get_wave_state(struct mqd_manager *mm, void *mqd,
 	return 0;
 }
 
-static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
+static void get_checkpoint_info(struct mqd_manager *mm, void *mqd, u32 *ctl_stack_size)
+{
+	struct v9_mqd *m = get_mqd(mqd);
+
+	*ctl_stack_size = m->cp_hqd_cntl_stack_size;
+}
+
+static void checkpoint_mqd(struct mqd_manager *mm, void *mqd, void *mqd_dst, void *ctl_stack_dst)
+{
+	struct v9_mqd *m;
+	/* Control stack is located one page after MQD. */
+	void *ctl_stack = (void *)((uintptr_t)mqd + PAGE_SIZE);
+
+	m = get_mqd(mqd);
+
+	memcpy(mqd_dst, m, sizeof(struct v9_mqd));
+	memcpy(ctl_stack_dst, ctl_stack, m->cp_hqd_cntl_stack_size);
+}
+
+static void restore_mqd(struct mqd_manager *mm, void **mqd,
 			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
-			struct queue_properties *q)
+			struct queue_properties *qp,
+			const void *mqd_src,
+			const void *ctl_stack_src, u32 ctl_stack_size)
 {
+	uint64_t addr;
 	struct v9_mqd *m;
+	void *ctl_stack;
 
-	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
+	m = (struct v9_mqd *) mqd_mem_obj->cpu_ptr;
+	addr = mqd_mem_obj->gpu_addr;
 
-	m = get_mqd(*mqd);
+	memcpy(m, mqd_src, sizeof(*m));
 
-	m->cp_hqd_pq_control |= 1 << CP_HQD_PQ_CONTROL__PRIV_STATE__SHIFT |
-			1 << CP_HQD_PQ_CONTROL__KMD_QUEUE__SHIFT;
+	*mqd = m;
+	if (gart_addr)
+		*gart_addr = addr;
+
+	/* Control stack is located one page after MQD. */
+	ctl_stack = (void *)((uintptr_t)*mqd + PAGE_SIZE);
+	memcpy(ctl_stack, ctl_stack_src, ctl_stack_size);
+
+	m->cp_hqd_pq_doorbell_control =
+		qp->doorbell_off <<
+			CP_HQD_PQ_DOORBELL_CONTROL__DOORBELL_OFFSET__SHIFT;
+	pr_debug("cp_hqd_pq_doorbell_control 0x%x\n",
+				m->cp_hqd_pq_doorbell_control);
+
+	qp->is_active = 0;
 }
 
-static void update_mqd_hiq(struct mqd_manager *mm, void *mqd,
+static void init_mqd_hiq(struct mqd_manager *mm, void **mqd,
+			struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
 			struct queue_properties *q)
 {
 	struct v9_mqd *m;
 
-	update_mqd(mm, mqd, q);
+	init_mqd(mm, mqd, mqd_mem_obj, gart_addr, q);
+
+	m = get_mqd(*mqd);
 
-	/* TODO: what's the point? update_mqd already does this. */
-	m = get_mqd(mqd);
-	m->cp_hqd_vmid = q->vmid;
+	m->cp_hqd_pq_control |= 1 << CP_HQD_PQ_CONTROL__PRIV_STATE__SHIFT |
+			1 << CP_HQD_PQ_CONTROL__KMD_QUEUE__SHIFT;
 }
 
 static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
@@ -338,22 +380,14 @@ static void init_mqd_sdma(struct mqd_manager *mm, void **mqd,
 	if (gart_addr)
 		*gart_addr = mqd_mem_obj->gpu_addr;
 
-	mm->update_mqd(mm, m, q);
-}
-
-static int load_mqd_sdma(struct mqd_manager *mm, void *mqd,
-		uint32_t pipe_id, uint32_t queue_id,
-		struct queue_properties *p, struct mm_struct *mms)
-{
-	return mm->dev->kfd2kgd->hqd_sdma_load(mm->dev->kgd, mqd,
-					       (uint32_t __user *)p->write_ptr,
-					       mms);
+	mm->update_mqd(mm, m, q, NULL);
 }
 
 #define SDMA_RLC_DUMMY_DEFAULT 0xf
 
 static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
-		struct queue_properties *q)
+			struct queue_properties *q,
+			struct mqd_update_info *minfo)
 {
 	struct v9_sdma_mqd *m;
 
@@ -378,23 +412,40 @@ static void update_mqd_sdma(struct mqd_manager *mm, void *mqd,
 	q->is_active = QUEUE_IS_ACTIVE(*q);
 }
 
-/*
- *  * preempt type here is ignored because there is only one way
- *  * to preempt sdma queue
- */
-static int destroy_mqd_sdma(struct mqd_manager *mm, void *mqd,
-		enum kfd_preempt_type type,
-		unsigned int timeout, uint32_t pipe_id,
-		uint32_t queue_id)
+static void checkpoint_mqd_sdma(struct mqd_manager *mm,
+				void *mqd,
+				void *mqd_dst,
+				void *ctl_stack_dst)
 {
-	return mm->dev->kfd2kgd->hqd_sdma_destroy(mm->dev->kgd, mqd, timeout);
+	struct v9_sdma_mqd *m;
+
+	m = get_sdma_mqd(mqd);
+
+	memcpy(mqd_dst, m, sizeof(struct v9_sdma_mqd));
 }
 
-static bool is_occupied_sdma(struct mqd_manager *mm, void *mqd,
-		uint64_t queue_address, uint32_t pipe_id,
-		uint32_t queue_id)
+static void restore_mqd_sdma(struct mqd_manager *mm, void **mqd,
+			     struct kfd_mem_obj *mqd_mem_obj, uint64_t *gart_addr,
+			     struct queue_properties *qp,
+			     const void *mqd_src,
+			     const void *ctl_stack_src, const u32 ctl_stack_size)
 {
-	return mm->dev->kfd2kgd->hqd_sdma_is_occupied(mm->dev->kgd, mqd);
+	uint64_t addr;
+	struct v9_sdma_mqd *m;
+
+	m = (struct v9_sdma_mqd *) mqd_mem_obj->cpu_ptr;
+	addr = mqd_mem_obj->gpu_addr;
+
+	memcpy(m, mqd_src, sizeof(*m));
+
+	m->sdmax_rlcx_doorbell_offset =
+		qp->doorbell_off << SDMA0_RLC0_DOORBELL_OFFSET__OFFSET__SHIFT;
+
+	*mqd = m;
+	if (gart_addr)
+		*gart_addr = addr;
+
+	qp->is_active = 0;
 }
 
 #if defined(CONFIG_DEBUG_FS)
@@ -431,15 +482,17 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 
 	switch (type) {
 	case KFD_MQD_TYPE_CP:
-	case KFD_MQD_TYPE_COMPUTE:
 		mqd->allocate_mqd = allocate_mqd;
 		mqd->init_mqd = init_mqd;
-		mqd->free_mqd = free_mqd;
+		mqd->free_mqd = kfd_free_mqd_cp;
 		mqd->load_mqd = load_mqd;
 		mqd->update_mqd = update_mqd;
-		mqd->destroy_mqd = destroy_mqd;
-		mqd->is_occupied = is_occupied;
+		mqd->destroy_mqd = kfd_destroy_mqd_cp;
+		mqd->is_occupied = kfd_is_occupied_cp;
 		mqd->get_wave_state = get_wave_state;
+		mqd->get_checkpoint_info = get_checkpoint_info;
+		mqd->checkpoint_mqd = checkpoint_mqd;
+		mqd->restore_mqd = restore_mqd;
 		mqd->mqd_size = sizeof(struct v9_mqd);
 #if defined(CONFIG_DEBUG_FS)
 		mqd->debugfs_show_mqd = debugfs_show_mqd;
@@ -449,23 +502,24 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 		mqd->allocate_mqd = allocate_hiq_mqd;
 		mqd->init_mqd = init_mqd_hiq;
 		mqd->free_mqd = free_mqd_hiq_sdma;
-		mqd->load_mqd = load_mqd;
-		mqd->update_mqd = update_mqd_hiq;
-		mqd->destroy_mqd = destroy_mqd;
-		mqd->is_occupied = is_occupied;
+		mqd->load_mqd = kfd_hiq_load_mqd_kiq;
+		mqd->update_mqd = update_mqd;
+		mqd->destroy_mqd = kfd_destroy_mqd_cp;
+		mqd->is_occupied = kfd_is_occupied_cp;
 		mqd->mqd_size = sizeof(struct v9_mqd);
 #if defined(CONFIG_DEBUG_FS)
 		mqd->debugfs_show_mqd = debugfs_show_mqd;
 #endif
+		mqd->read_doorbell_id = read_doorbell_id;
 		break;
 	case KFD_MQD_TYPE_DIQ:
-		mqd->allocate_mqd = allocate_hiq_mqd;
+		mqd->allocate_mqd = allocate_mqd;
 		mqd->init_mqd = init_mqd_hiq;
-		mqd->free_mqd = free_mqd;
+		mqd->free_mqd = kfd_free_mqd_cp;
 		mqd->load_mqd = load_mqd;
-		mqd->update_mqd = update_mqd_hiq;
-		mqd->destroy_mqd = destroy_mqd;
-		mqd->is_occupied = is_occupied;
+		mqd->update_mqd = update_mqd;
+		mqd->destroy_mqd = kfd_destroy_mqd_cp;
+		mqd->is_occupied = kfd_is_occupied_cp;
 		mqd->mqd_size = sizeof(struct v9_mqd);
 #if defined(CONFIG_DEBUG_FS)
 		mqd->debugfs_show_mqd = debugfs_show_mqd;
@@ -475,10 +529,12 @@ struct mqd_manager *mqd_manager_init_v9(enum KFD_MQD_TYPE type,
 		mqd->allocate_mqd = allocate_sdma_mqd;
 		mqd->init_mqd = init_mqd_sdma;
 		mqd->free_mqd = free_mqd_hiq_sdma;
-		mqd->load_mqd = load_mqd_sdma;
+		mqd->load_mqd = kfd_load_mqd_sdma;
 		mqd->update_mqd = update_mqd_sdma;
-		mqd->destroy_mqd = destroy_mqd_sdma;
-		mqd->is_occupied = is_occupied_sdma;
+		mqd->destroy_mqd = kfd_destroy_mqd_sdma;
+		mqd->is_occupied = kfd_is_occupied_sdma;
+		mqd->checkpoint_mqd = checkpoint_mqd_sdma;
+		mqd->restore_mqd = restore_mqd_sdma;
 		mqd->mqd_size = sizeof(struct v9_sdma_mqd);
 #if defined(CONFIG_DEBUG_FS)
 		mqd->debugfs_show_mqd = debugfs_show_mqd_sdma;